KR20130034330A - Method and system for a detecting malfunction of power system map-board - Google Patents

Abstract

PURPOSE: A map board malfunction diagnosis method and a system thereof is provided to diagnosis an unusual condition of a display lamp or a digital display meta through a comparison of the amount of change of voltage per hour as a transmitted optical amount detection signal, facilitate maintenance by providing an alarm and error details on a real-time basis, and provide location and content of a malfunction rapidly when a problem occurs in a breaker status/current direction and transmission line/transformer electric energy display, thereby reducing a map board malfunction time with stable operation of an inspection unit. CONSTITUTION: A map board malfunction diagnosis system for inspecting a system comprises the following: a means for measuring the optical amount by accommodating an optical sensor and an optical amount input port in a map board display control board, and mounting a control program on a one-chip microcomputer; a means for transmitting optical amount information obtained from the optical sensor, total breaker status, and electric energy display information to a malfunction diagnosis system; and a means for diagnosing the occurrence of an unusual condition of a map board display lamp and a display meta if a difference exists when comparing the two consecutively changing information of the optical information measured from a malfunction diagnosis determination unit and the electric energy display information transmitted from a SCADA system. [Reference numerals] (10) Receiving an existing map board display control board; (15) Circuit breaker status/direction display light amount detection unit; (20) Transformer/transmission line power display light amount detection unit; (25) Embedded one-chip MICOM inside execution status transmission unit; (30) Map board abnormal status diagnosis unit; (35) Display device printer; (40) RS232C USB internet(remote monitoring facilities); (AA) Light D; (BB) Light A; (CC) Inside; (DD) RS485 communication line;

Description

Map Board Fault Diagnosis Method and Fault Diagnosis System for Grid Monitoring {METHOD AND SYSTEM FOR A DETECTING MALFUNCTION OF POWER SYSTEM MAP-BOARD}

The present invention includes the steps of accommodating an optical sensor and a light quantity input port in a map board display control board, mounting a control program in a one-chip microcomputer, and transmitting the acquired light quantity information, breaker state, and power quantity display information to a failure diagnosis system; In this case, the fault diagnosis unit judges the abnormal state of the map board display lamp and display meta by comparing the information continuously changed. The present invention relates to a failure diagnosis method and system for a power system monitoring map board that solves a problem of displaying information.

For the efficient operation of the power system which is getting bigger and more complicated, the power monitoring and control facility is composed of a system for independently and organically managing each area of production, transportation, and sales.

The power system operation is divided into the central power supply station of the power exchange, the power transmission system operation center of KEPCO, the regional power supply station of the power transmission and transformation office, the power distribution center, and the power distribution operation center of the power distribution office. (SCADA, Sub-SCADA), Distribution Automation System (DAS), and Remote Metering Equipment (AMR).

Among these facilities, the present invention relates to a technology for monitoring a display state of a map board 100 applied as a system monitoring means of a power supply for monitoring and controlling a power system and providing related information in case of an abnormality.

The state of the art is operating by installing a power system monitoring panel (Map-Board, 100) for monitoring the failure of the power system as shown in FIG. These map boards are cheaper to install than the expensive display equipment such as DLP, PDP, and LCD, which are the latest display technologies. After installation, the system has excellent visibility compared to DLP. The map board 100 is used.

Despite these advantages, whenever the internal power system changes, such as the construction of new substations, the expansion and modification of transmission lines, and the expansion of transformers, it is often necessary to remove the pieces of the hatch of the map board and re-assemble the schematic drawings by hand. There is a disadvantage that is made.

In addition, according to the rearranged schematic diagram, a display lamp showing a state of a circuit breaker and a direction of power flow as shown in FIG. 2, and displays an amount of power of a transmission line and a main tansformer. It is necessary to add, move and reset the analog display metadata.

4, the rear blade operation is rearranged in accordance with the changed system situation, and the reconfiguration of the breaker state or the current flow direction display lamp 110 and the reinstallation of the electric power display digital display meta 120 according to the changed position are performed. Frequent conditions occur. For this reason, a poor contact occurs due to frequent movement of a cable connecting the connector located at the rear of the lamps and the corresponding control board 200 for displaying the map board as shown in FIG. 5.

In addition, when the serial communication between RS-485 is not smooth, there is a problem that the value of the breaker, the current flow direction or the amount of power of the map board 100 is maintained as past data.

In addition, such abnormalities may occur even when the SCADA system having a self-diagnosis function is operating normally. RS-485 serial communication cable 220 and the circuit breaker status display lamp 230 and the power display digital connector 240 to connect the map board display control board 200 even if the signal is transmitted through RS-485 If the contact is poor, there is a problem that an error occurs in the monitoring display state of the map board 100.

The problem to be solved by the present invention is to solve the above-described problems, and accommodates a circuit for detecting and transmitting the amount of light in the breaker state display lamp or power display lamp in the existing map board display control board, the built-in one chip microcomputer The program mounted on (AT89C2051) can be modified to monitor at all times, diagnose the abnormal state through serial communication, transmit it to the fault diagnosis system of the map board, and compare the change in the hourly amount of voltage, the transmitted light quantity detection signal. Diagnosis of abnormal condition of display lamp or digital display metaphor indicated by map board monitoring current system status, and easy to maintain and provide alarm and error contents in real time.

Another problem to be solved by the present invention is to provide the operator with fault location and contents promptly when the breaker status / current direction displayed on the map board, the transmission line / transformer power indication occurs, the map through the stable operation of the monitoring panel This is to reduce board failure time.

According to an aspect of the present invention, there is provided an optical sensor and a light quantity input port on a map board display control board, and a built-in one chip microcomputer includes a control program for controlling the light quantity information. Transmitting the total breaker status and power level indication information to the fault diagnosis system, and comparing the two continuously changing information based on the light amount information measured by the fault diagnosis unit and the power amount information received from the SCADA system. If there is an error, it consists of the steps of diagnosing the abnormal state of the map board display lamp and the display meta, and the power system monitoring that solves the problem of displaying the wrong information on the map board and the error of the monitoring state due to the poor connector contact of the map board equipment. It provides a method for diagnosing a failure of a map board.

According to another aspect of the present invention, there is provided a means for mounting a control program on a one-chip microcomputer, and a means for measuring an amount of light by accommodating a light amount input port on a map board display control board. Means for transmitting the status and power indication information to the failure diagnosis system, and the difference between the two continuously changing information based on the light quantity information measured by the failure diagnosis unit and the power information received from the Skada system A power system that has a means of diagnosing an abnormal state of the map board display lamp and display meta, if any, and solves the problem of displaying the wrong information on the map board and the error of the monitoring status due to the poor connector contact of the map board equipment. It is to provide the fault diagnosis system of monitoring map board.

The present invention adds a function to measure and deliver the light quantity by installing an optical sensor on the control board installed on the existing map board, and constitutes an operating system having a window-based diagnostic unit, power system monitoring panel installed in most existing business headquarters It is economically beneficial because it provides the function and means to diagnose abnormal places and conditions in case of problems such as poor contact of jack or connector by monitoring the display state of the in real time board in real time. There is.

Another effect of the present invention is to provide a fault location and information to the operator quickly when a problem occurs in the breaker state, flow direction, transmission line / transformer power display displayed on the map board failure of the map board through stable operation of the monitoring panel You can save time.

Another effect of the present invention is carried out by the expert knowledge or judgment of the recovery operator, the operator when the failure occurs in the existing power system, at this time, if the fault situation is incorrectly judged or the wrong operation is performed to the power supply as well as the power equipment It can cause a great loss, and the monitoring through the continuous failure diagnosis system of the power system monitoring map board greatly reduces the economic loss including labor costs by prompt judgment and recovery of system failure.

Figure 1 shows a power system monitoring panel (Map-Board) according to the present invention.
Figure 2 shows a circuit breaker status indicator in accordance with the present invention.
3 shows a digital display of the amount of power display in accordance with the present invention.
4 illustrates a rearranged mapboard configuration in accordance with the present invention.
5 is a diagram illustrating a method for configuring a system monitoring map board failure diagnosis system according to the present invention.
Figure 6 shows a power system monitoring panel (Map-Board) according to the present invention.
7 shows a detailed configuration diagram accommodated in the map board display control board according to the present invention.
8 shows a detailed configuration of the abnormal state diagnosis unit according to the present invention.
Figure 9 shows the breaker state / current direction indication lamp of the present invention according to the present invention.
Figure 10 shows a digital display meter for displaying the amount of power of the present invention according to the present invention.
<Brief Description of Drawings>
15: light quantity detector of direction indicator lamp of breaker status or power current
20: power display light amount detector of the transformer / transmission line
25: One chip microcomputer internal execution status transmission unit

Hereinafter, the present invention will be described in detail.

The failure diagnosis method of the power system monitoring map board according to the present invention comprises the step of accommodating the light sensor and light input ports on the map board display control board, and mounting the control program on the mounted one-chip microcomputer. The entire breaker status and power level indication information are transmitted to the failure diagnosis system, and the map is made through the mutual comparison of the continuously changing information based on the light quantity information measured by the failure diagnosis unit and the power amount information transmitted from the SCADA system. It includes diagnosing abnormal state of board display lamp and digital display meta.

The fault diagnosis system of the power system monitoring map board according to the present invention includes means for measuring the amount of light by mounting a control program on a one-chip microcomputer and accommodating an optical sensor and a light quantity input port on a map board display control board, Means of transmitting the total breaker status and the amount of power information to the fault diagnosis system in the form of a terminal, and through the comparison of the continuously changing information based on the light quantity information measured by the fault diagnosis unit and the power amount information transmitted from the SCADA system Means for diagnosing abnormal states of the mapboard display lamp and the digital display metameter are provided. A specific embodiment of the present invention will be described.

<Examples>

As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the following description.

However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

The present invention relates to the configuration of the fault diagnosis system of the system monitoring map board installed in the regional power supply station and other substations of KEPCO, as shown in Figure 6, by detecting the signal from the optical sensor to continuously detect the voltage fluctuation signal according to the light quantity change In order to transmit the light sensor and the light input port is installed in the existing map board control board as shown in Figure 7, the yellow circuit indicating the opening of the breaker at the back of the display lamp indicating the state of the breaker or the direction of power flow A light quantity detector 15 is provided for detecting with a light sensor a state in which the display lamps are turned off in red and no power supply.

In addition, the optical sensor installed inside the display window of the digital display meter to display the power supply of the transformer and the power flow of the transmission line according to the present invention is a transformer for detecting a light amount signal that changes each time the number of digits change; The power transmission line power display light quantity detection unit 20 is provided.

The system monitoring map board has a built-in one-chip microcomputer for transmitting the breaker input / open state and the power flow rate of the transformer / transmission line to each designated port through the flash memory in the one-chip microcomputer C2051 as shown in FIG. An internal execution state transmission unit 25 is provided.

The map board display control board transmits signals transmitted through the RS-485 communication line for each port through the serial communication processing unit, and displays operation states such as inputting and opening breakers for each port from the digital display state calculating unit to the abnormal state diagnosis unit. After storing, receiving the digital state signal of the light quantity check circuit breaker information, the power current information and continuously checks whether the light quantity changes according to the timing of the display lamp change through the comparison unit (D), the light quantity checked transformer, After receiving the information of the transmission line tide continuously from the SCADA system, the amount of light is changed according to the time of change through the comparison unit (A). It is configured to output the fault location and contents along with the alarm (see Fig. 8).

The comparison target of the comparison unit (D) is a signal indicating the digital state of the breaker information and the power current information, and is installed on the map board based on the signal value of the normal state transmitted from the SCADA system to measure the light quantity of the digital display meter. It is configured to detect the change in the amount of light is compared with each other, but when the reference value is changed but the amount of light measured by the optical sensor does not change is configured to determine that the abnormality.

The comparison target of the comparison unit (A) is a signal indicating the transformer and transmission line current information in an analog state, and the breaker status indication lamp and the bird direction indication lamp installed on the map board based on the normal signal value transmitted from the SCADA system. The amount of light is detected by an optical sensor, and the light quantity change values are compared with each other.

At the same time, it is equipped with the function of remotely transmitting map board failure information through RS-232, USB, and Internet interface to the operation department of map board and SCADA system.

It looks at the detailed configuration of the abnormal state diagnosis according to the present invention.

The light sensor is fixed to the back of the lamp which shows the change of breaker and current condition, so the influence of interference by external light is small, but the digital display metameter for power display has the light sensor in front and the change of external light through the translucent membrane Can come in.

Therefore, since the external light is gradually changed in the amount of light detected in real time, for example, the value of the light amount change (Vd / Δt, Va / Δt) that changes at a fast time such as a change within 0.1 to 0.2 seconds is selected as a comparison value. Therefore, the method of reducing disturbance can be applied.

The light quantity measurement of the display lamp is a built-in Photo-Tr / CDS optical sensor on the rear surface of the LED lamp inside the display lamp 110, such as the breaker state and / or the bird direction display lamp to detect a change in the light amount.

The optical sensor is configured such that the resistance value inside the optical sensor changes according to the amount of light that changes due to the lighting of the red and yellow display lamps and the light off of the display lamps. It is configured to be detected and compared with the signal transmitted from the SCADA system, which is a reference value, and judges that there is an error when there is a difference.

The following is a description of the inspection of the transmission line and transformer power analog display meter.

The amount of light affected by the change in the value of the analog display meta 120 is measured by an optical sensor, and the optical sensor (Photo-Tr / CDS) changes the resistance value of the internal light sensor by changing the amount of light that is detected. The value is finally detected by the change in the magnitude of the voltage signal and compared with the reference value transmitted from the SCADA system, and when there is a difference, it is judged as an abnormality of the map board. It is.

The present invention is assigned by assigning a unique number for each port of the power system monitoring map board 100, and on the entire system on the map board through the RS-485 cable which is a serial communication line of the mounted map board display control board 200 The breaker status and the flow direction indication lamp, the transformer load and the change of the power line are changed in real time from the SCADA system using the one-chip microcomputer 210 equipped with a control program and output from the ports corresponding to each other. It is configured to measure the presence / absence of the failure status of the map board output state by measuring the presence / absence of the change in the quantity of light of the seven segment LED which is the status display lamp and the power quantity display meta (110,120) with the light sensor. .

In FIG. 8, the breaker / current direction brought from the map board display control board to the transmission digital display state calculation unit for each port, input element (1) of FIG. Change status data of the lamp is received from the SCADA system and input in real time.

The amount of light change signal of the circuit breaker state lamp and the bird flow direction lamp in which the operation is generated is input to the light quantity checked digital state signal detection voltage change amount (Vd / Δt) calculating unit of FIG. 8 (2). Received and input from the one-chip microcomputer (210) (200).

As shown in FIG. 8, these input signals are transmitted to the mapboard failure diagnosis determining unit which processes a comprehensive abnormality / nonexistence determination through the comparing unit D.

The transmission analog display state calculation unit for each port, which is an input element (3) of FIG. 8, is transmitted from the SCADA system and inputs power-change state data of a transformer / transmission line through a map board display control board in real time.

An analog state signal detection voltage change amount ((Va / Δt) calculating unit measured from an optical sensor which is an input element (4) of FIG. 8 is used to calculate a light amount change signal of a transformer / transmission line power amount display meter with a change. Power input received from the one-chip microcomputer 210 of the corresponding map board display control board 200 and input.

These input signals are transmitted to the map board failure diagnosis determining unit which processes a comprehensive abnormality / nonexistence determination through the comparing unit A.

The comparison unit (D) and the comparison unit (A) compares the light quantity change values detected from the optical sensors installed on the map board with respect to the signal values of the steady state transmitted from the skada system, but the reference value changes It is configured to determine that an abnormality occurs when the amount of light measured by the optical sensor does not change.

The fault diagnosis system of the power system monitoring map board physically separates the breaker state and the flow direction indication lamp which are the digital signal parts, the transformer and the transmission line which are the analog signal parts, respectively, when measuring the amount of light using an optical sensor. It is configured to compare corresponding values with each other.

When a change in the indication value of the map board display control board of the corresponding port occurs, the one-chip microcomputer (11.0 MHz operation clock, AT89C2051) stores the digital breaker information / analog power value in the flash memory.

In addition, a change in the amount of light from the microcomputer 210 of the map board display control board 200 of the designated port corresponding to the operation of the breaker using the process of transmitting the same to the terminal of the failure diagnosis system (for example, when the breaker input is changed from opening to opening). The circuit breaker lamp is configured to actually monitor the presence / absence of light emission by the Photo-Tr / CDS optical sensor which changes instantaneously from red light to yellow light and changes the amount of light generated) into a change in resistance value. have.

At this time, the comparison unit (A) for detecting and comparing analog values is compared with the comparison unit (D) in which the optical sensor 300 is mounted on the inner rear side as shown in FIG. 9, as shown in FIG. 10. Since it has a structure for mounting the optical sensor 350, it is highly likely to be affected by external light changes.

In order to minimize the disturbance, it is a technical configuration to minimize the influence of external light around the map board that changes slowly compared to the display lamp. I use it.

In addition, according to another embodiment of the present invention, irrespective of the transmission of the digital display lamp and the analog power value on the flash memory inside the one-chip microcomputer 210, the method of diagnosing the light output of the display lamp is applied as follows. Use in parallel when making comprehensive judgments. The contents of all points of power value are stored in the memory of the map board fault diagnosis system, and then configured to monitor the points where the values of all points do not change at all every 5 minutes, and the monitored information is transmitted to the fault determination unit for comprehensive judgment. It can be configured to use as information.

As a cumulative management, it finds out the point value of the whole point that does not change at every 10 minutes, and can be configured to display the driver and to generate an alarm every 20-30 minutes.

Look at another embodiment of the present invention. Using LAN cable within KEPCO, we install WEB / SCADA program in the fault diagnosis system to acquire system information.

By constructing WEB / SCADA status information extracting unit, it is possible to construct a system for diagnosing abnormal conditions that increase accuracy by comprehensive failure diagnosis by adding a method of comparing display information.

7 photo-Tr / CDS optical sensors such as 7 photo-Tr / CDS can be attached to the surface segment of 7 segment LEDs embedded in the digital display meta 120 for power display. It is possible to implement a configuration that more precisely monitors the amount of power indication by applying a method of knowing whether it is being performed.

Adds an additional function that monitors the main points of the system only in summary form such as system changes such as truces and breaker operation due to equipment failure. Digital information only outputs that the breaker is operated, and the display meta value, which is an analog element, can be output by summarizing the content when the power exceeds or the reference voltage is exceeded.

This monitors the time of operation and operations such as breaker open / close. In addition, the analog value gives the function of monitoring the overvoltage, undervoltage, and time of the voltage element when the allowable capacity of the line and the installed capacity of the transformer are exceeded. Compared to the existing Unix-based MMI screen, it has the advantage of easy summary setting and opening definition, easy to use as a Windows-based operating system, and quick screen scrolling.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention.

therefore. The embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but are intended to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

The present invention includes the steps of accommodating an optical sensor and a light quantity input port in a map board display control board, mounting a control program in a one-chip microcomputer, and transmitting the acquired light quantity information, breaker state, and power quantity display information to a failure diagnosis system; In this case, the fault diagnosis unit judges the abnormal state of the map board display lamp and display meta by comparing the information continuously changed. It is highly industrially available because it can provide a method and system for troubleshooting a power board monitoring map board that solves the problem of displaying information.

Claims (7)

In the failure diagnosis method of the power board monitoring map board,
Receiving an optical sensor and a light quantity input port in a map board display control board and mounting a control program in an embedded one-chip microcomputer;
Transmitting the light quantity information, the total breaker state, and the power amount indication information acquired from the optical sensor to a failure diagnosis system; And
Based on the light quantity information measured by the fault diagnosis unit and the power quantity indication information received from the SCADA system, the two continuously changing information are compared with each other, and when there is a difference, it is diagnosed as an abnormal state of the map board display lamp and the display meta. Failure diagnosis method of the power system monitoring map board comprising the step of. The method according to claim 1,
The diagnosing of the abnormal state may be performed based on the amount of power display information transmitted from the skada system, but the change in the amount of light received from the optical sensor is changed when the amount of power display information transmitted from the skada system is changed. The failure diagnosis method of the power system monitoring map board, characterized in that it is determined that an abnormal state occurs if there is no. In the fault diagnosis system of the power board monitoring map board,
Means for mounting a control program in one-chip microcomputer and accommodating an optical sensor and a light quantity input port in a map board display control board to measure light quantity;
Means for transmitting the light quantity information, the total breaker state and the power quantity indication information acquired from the optical sensor to a failure diagnosis system; And
Based on the light quantity information measured by the fault diagnosis unit and the power quantity indication information received from the SCADA system, the two continuously changing information are compared with each other, and when there is a difference, it is diagnosed as an abnormal state of the map board display lamp and the display meta. Failure diagnosis system of the power system monitoring map board having a means for. The method according to claim 3,
The means for diagnosing the abnormal state is compared based on the amount of power indication information received from the skada system, but the change in the amount of light received from the optical sensor when the amount of power indication information received from the skada system is changing in the comparator The failure diagnosis system of the power system monitoring map board, characterized in that it is determined that an abnormal state occurs when there is no. The method according to claim 3 or 4,
The fault diagnosis system of the power system monitoring map board measures the light quantity variation of the transmission line and the transformer power quantity analog display meter with an optical sensor, and the optical sensor uses Photo-Tr / CDS, and the change of the detected light quantity is an optical sensor. A failure diagnosis system of a power system monitoring map board, characterized by changing an internal resistance value and finally detecting a changed resistance value as a magnitude change of a voltage signal. The method according to claim 5,
The fault diagnosis system of the power system monitoring map board uses the amount of light changed in a short time as a comparison value in order to minimize the influence of external light around the map board which is slowly changing compared to the display lamp. Fault diagnosis system. The method according to claim 5,
The fault diagnosis system of the power system monitoring map board uses a light sensor to measure the amount of light, physically separates a breaker state and a flow direction indicator, which are digital signal parts, and a transformer and a transmission line, which are analog signal parts, respectively. Failure diagnosis system of power system monitoring map board, characterized in that the comparison.

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